Airplane



FIG. 1 is a top plan view of an airplane showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the other side being identical;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view similar to FIG. 1, but with the engines and supplemental wings in an alternate position;

FIG. 7 is a bottom plan view of FIG. 6;

FIG. 8 is a side elevational view of FIG. 6;

FIG. 9 is a front elevational view of FIG. 6; and

FIG. 10 is a rear elevational view of FIG. 6. 

The ornamental design for an airplane, substantially as shown and described. 